• If the listType property value is playlist, then the list property specifies the playlist ID or an array of video IDs. In the YouTube Data API, the playlist resource's id property identifies a playlist's ID, and the video resource's id property specifies a video ID.
• If the listType property value is user_uploads, then the list property identifies the user whose uploaded videos will be returned.
• If the listType property value is search, then the list property specifies the search query. Note: This functionality is deprecated and will no longer be supported as of 15 November 2020.